Department of Zoology

Prof. P.Mangala C.S. De Silva

Senior Professor

B.Sc. Honors (Ruhuna, SL)
M.Phil (Bergen,Norway)
PhD (Amsterdam, The Netherlands)
Post Doctoral Fellow ( Harvard Medical School, Boston, USA)

Email - chathura@zoo.ruh.ac.lk

Invertebrate Diversity

Vertebrate Diversity

Conservation and Management of Biological Resources

Research Methodology

Scientific Writing and Communication

Environmental Pollution and Toxicology

Fisheries and Aquaculture

Laboratory Techniques in Biology

Environmental Toxicology

Chronic Kidney Disease (CKDu)

Micro Pollutants In Rice

Peer reviewed Articles in SCI Index Journals:

De Silva, P. M., Gunasekara, T. D. K. S. C., Gunarathna, S. D., Sandamini, P. M. M. A., Pinipa, R. A. I., Ekanayake, E. M. D. V., ... & Jayasundara, N. (2021). Urinary Biomarkers of Renal Injury KIM-1 and NGAL: Reference Intervals for Healthy Pediatric Population in Sri Lanka. Children, 8(8), 684.

Abdul, K. S. M., P. Mangala De Silva, E. M. D. V. Ekanayake, W. A. K. G. Thakshila, S. D. Gunarathna, T. D. K. S. C. Gunasekara, S. S. Jayasinghe et al. "Occupational Paraquat and Glyphosate Exposure May Decline Renal Functions among Rural Farming Communities in Sri Lanka." International journal of environmental research and public health 18, no. 6 (2021): 3278.

Gunasekara, T.D.K.S.C., De Silva, P.M., Herath, C., Siribaddana, S., Siribaddana, N., Jayasumana, C., Jayasinghe, S., Cardenas-Gonzalez, M. and Jayasundara, N., 2020. The Utility of Novel Renal Biomarkers in Assessment of Chronic Kidney Disease of Unknown Etiology (CKDu): A Review. International journal of environmental research and public health, 17(24), p.9522.

Liu, Lin, Jialiang Han, Xiaohang Xu, Zhidong Xu, Kasun S. Abeysinghe, Anjana J. Atapattu, P. Mangala CS De Silva, Qinhui Lu, and Guangle Qiu. "Dietary exposure assessment of cadmium, arsenic, and lead in market rice from Sri Lanka." Environmental Science and Pollution Research (2020): 1-9.

Babich, Remy, Jake C. Ulrich, EM Dilini V. Ekanayake, Andrey Massarsky, P. Mangala CS De Silva, Pathmalal M. Manage, Brian P. Jackson et al. "Kidney developmental effects of metal-herbicide mixtures: Implications for chronic kidney disease of unknown etiology." Environment International 144 (2020): 106019.

Shi, Z., Carey, M., Meharg, C., Williams, P.N., De Silva, P.M.C.S., Signes-Pastor, A.J., Triwardhani, E.A., Pandiangan, F.I., Campbell, K., Elliott, C., Marwa, E.M. and Jiujin, X (2020). Rice Grain Cadmium Concentrations in the Global Supply-Chain. Exposure and Health, pp.1-8.

Xu, X., Han, J., Abeysinghe, K.S., Atapattu, A.J., De Silva, P.M.C.S., Xu, Z., Long, S. and Qiu, G (2020) Dietary exposure assessment of total mercury and methylmercury in commercial rice in Sri Lanka. Chemosphere, 239, p.124749.

De Silva, PMCS. Abdul, K., Jayasinghe, S., Chandana, S., Jayasumana, C. and Siribaddana, S., (2019). Occupational herbicide exposure and declining kidney functions among sugarcane farmers in rural Sri Lanka. Kidney International Reports, 4(7), pp.S102-S103.

Anand, S., Caplin, B., Gonzalez-Quiroz, M., Schensul, S.L., Bhalla, V., Parada, X., Nanayakkara, N., Fire, A., Levin, A., De Silva, P.M.C.S., Friedman, D.J. and Aguilar-Gonzalez, A (2019) Epidemiology, molecular, and genetic methodologies to evaluate causes of CKDu around the world: report of the Working Group from the ISN International Consortium of Collaborators on CKDu. Kidney international, 96(6), pp.1254-1260.

Manus Carey, Caroline Meharg, Paul Williams, Ernest Marwa, Xiao Jiujin, Jï¿½lia Gomes Farias, P Mangala CS De Silva, Antonio Signes-Pastor, Ying Lu, Fernando Teixeira Nicoloso, Laurie Savage, Katrina Campbell, Christopher Elliott, Eureka Adomako, Andy J Green, Eduardo Moreno-Jimï¿½nez, ï¿½ngel Antonio Carbonell-Barrachina, Eridha Ayu Triwardhani, Febbyandi Isanda Pandiangan, Parvez I Haris, Youssef F Lawgali, Alessia Sommella, Massimo Pigna, Catherine Brabet, Didier Montet, Keston Njira, Michael J Watts, Andrew A Meharg (2020) Global Sourcing of Low-Inorganic Arsenic Rice Grain. Exposure and Health. PP 1-9

Daam, M.A., Chelinho, S., Niemeyer, J.C., Owojori, O.J., De Silva, P.M.C.S., Sousa, J.P., van Gestel, C.A. and Rï¿½mbke, J (2019). Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives. Ecotoxicology and environmental safety, 181, pp.534-547.

Herath, C., Jayasumana, C., De Silva, P.M.C,S ., Siribaddana, S. and De Broe, M.E., (2018). Kidney diseases in agricultural communities: a case against heat-stress nephropathy. Kidney international reports, 3(2), pp.271-280

Savage, L., Carey, M., Hossain, M., De Silva, P.M.C.S., Williams, P.N., Meherg, A (2017) Elevated Trimethylarsine Oxide and Inorganic Arsenic in Northern Hemisphere Summer Monsoonal Wet Deposition. Environmental Science and Technology. DOI: 10.1021/acs.est.7b04356

Herath, C., Jayasumana, C., De Silva P.M.C.S., De Silva, P.H.C., Siribaddana, S., De Broe, M.E (2017) Kidney diseases in agricultural communities: a case against heat-stress nephropathy. Kidney International Reports, DOI: 10.1016/J.ekir.2017.10.006.

De Silva PMCS, Mohammed Abdul KS, Eakanayake EMDV, Jayasinghe SS, Jayasumana C, Asanthi HB, et al. (2016) Urinary Biomarkers KIM-1 and NGAL for Detection of Chronic Kidney Disease of Uncertain Etiology (CKDu) among Agricultural Communities in Sri Lanka. PLoS Negl Trop Dis 10(9): e0004979. doi:10.1371/journal.pntd.0004979

Khaja Shameem Mohammed Abdul, Sudheera Sammanthi Jayasinghe, Ediriweera PS Chandana, Channa Jayasumana, P Mangala C. S De Silva (2015) Arsenic and human health effects: A review. Environmental Toxicology and Pharmacology, 40 (3), 828-846

Norton, G.J., Williams, P.N., Adomako, E.E., Price, A.H., Zhu, Y.G., Zhao, F.J., McGrath, S., Deacon, C.M., Villada, A., De Silva, P.M.C.S., Sommella, A., Lu, Y., Ming, L., Brammer, H., Dasgupta, T., Islam, M.R., Meharg, A.A. (2014) Lead in rice: Analysis of baseline lead levels in market and field collected rice grains. Science of the Total Environment 485: 428-434

Meharg, A., Norton G., Deacon, C., Williams, P., Adomako, E.E., Price, A., Yonggun, Z., Li, G., Zhao, F.J., McGrath, S., Villada, A., Sommella, A., De Silva, P.M.C.S., Brammer, H., Dasgupta, T., Islam, M.R. (2013). Variation in rice cadmium related to human Exposure. Environmental Science and Technology 47: 5613-5618

De Silva, P.M.C.S., Pathiratne, A., Van Gestel, C.A.M. (2010) Chlorpyrifos causes decreased organic matter decomposition by suppressing earthworm and termite communities in tropical soil. Environment Pollution 158: 3041- 3047.

De Silva, P.M.C.S., Pathiratne, A., Van Gestel, C.A.M. (2010) Toxicity of chloropyrifos, carbofuran, mancozeb and their formulations to the earthworm Perionyx excavatus under tropical conditions. Applied Soil Ecology 44: 56-60.

Gunawickrama, K.B.S., De Silva, P.M.C.S., Johansen, T., Salvanes, A.G.V., Naevdal, G (2010). Preliminary evidence for genetic heterogeneity of the goby (Sufflogobius bibarbatus) in the Benguela ecosystem. Journal of Applied Ichthyology. 26: 110-112.

De Silva, P.M.C.S., Van Gestel, C.A.M. (2009) Comparative sensitivity of Eisenia andrei and Perionyx excavatus in earthworm avoidance tests using two soil types in the tropics. Chemosphere 77: 1609-1613.

De Silva, P.M.C.S., Van Gestel, C.A.M. (2009). Development of an alternative artificial soil for earthworm toxicity testing in tropical countries. Applied Soil Ecology 43: 170-174.

De Silva, P.M.C.S., Pathiratne, A., Van Gestel, C.A.M. (2009). Influence of temperature and soil type on the toxicity of three pesticides to Eisenia andrei. Chemosphere 76: 1410-1415.

De Silva, P.M.C.S, Samayawardehena, L.A. (2005). Effects of Chlorpyrifos on reproductive performance of Guppy (Poecilia reticulata). Chemosphere 58:1293-1299.

Guruge, W.A.H.P., Amarasinghe, N.J.De.S., De Silva. P.M.C.S., Priyantha, C.H. (2003). Water quality monitoring using macroinvertebrates as biological indicators in streams of the Nilwala river basin, Sri Lanka. Chiang Mai Journal of Science. 30: 219 - 226.

De Silva, P.M.C.S, Samayawardehena, L.A (2002). Low concentrations of Lorsban in water result in far reaching behavioral and histological effects in early life stages in Guppy. Ecotoxicology and Environmental Safety 53: 248-254.

Peer reviewed Articles in Non-index journals:

Hansani, P.K.C., Asha, R.L., De Silva, P.M.C.S. (2013). Effects of two herbicide foumulations on avoidance behaviour of the earthworm (Eisenia andrei) in two different soil types. Proceedings of the national symposium on Soil Biodiversity 2013. Ministry of Environment & Renewable energy, Sri Lanka. Page 138-143.

Randeni, L., De Silva, P.M.C.S. (2013). Earthworms are paid for their ecosystem services: Case of introducing novel livelihoods into rural economy. Proceedings of the national symposium on Soil Biodiversity 2013. Ministry of Environment & Renewable energy, Sri Lanka. Page 147-150.

De Silva, P.M.C.S., Amarasinghe N.J.D.S. (2008). Assesment of Dimethote toxicity on compost worm (Eisenia andrei) using earthworm avoidance test. Tropical Agriculture Research. 20, 25- 33.

De Silva, P.M.C.S., S.H.S. Senewirathne. (2008) Turn of the worms: Assessment of Carbendazim toxicity in earthworm, Eisenia andrei under tropical condition. Proceedings of the fourth Academic sessions, University of Ruhuna, Matara, Sri Lanka, 44- 50.

Thesis:

De Silva, P.M.C.S. (2009) Pesticide effects on earthworms: A tropical perspective. Ipskamp drukkers, Amsterdam, The Netherlands. p119

De Silva, P.M.C.S (2005). Population genetic structure of the pelagic goby, Sufflogobius bibarbatus, in the Northern Benguela ecosystem, based on PCR- RFLP analysis of the mitochondrial control region and the ND 3 / 4 regions, M.Phill Thesis, University of Bergen, Norway

De Silva, P.M.C.S (2000). Influence of physicochemical parameters and substrate type on distribution of freshwater fish species, in Nilwala River in Southern Sri Lanka. BSc Thesis, University of Ruhuna, Matara, Sri Lanka.

Abstracts:

Teimoory, H, Kodikara, K.A.S, De Silva, P.M.C.S, Madarasinghe, S.K, Ranasinghe, P, Somasiri, H.P.P.S, Danee, M, Dahdouh-Guebas, F, Jayatissa, L.P (2021) Heavy Metal Contents in Surface Sediments of Kalametiya Lagoon, Sri Lanka and Heavy Metal Uptake by Typha angustifolia L., A Wetland Sedge. Proceedings of the Academic sessions 2021, University of Ruhuna. Pg 102.

J. D. P. Ampitiyage, M. Carey, M. De Silva, C. Meharg, A. Meharg (2021) Distribution of some trace metals and micro elements in paddy soils across different climatic zones in Sri lanka. Proceedings of the EuroSoil 2021. Swisterland. Pg

TDKSC Gunasekara, PMMA Sandamini, RAI Pinipa, SD Gunarathna, EMDV Ekanayake, SS Jayasinghe, PMCS De Silva (2020). Preliminary Screening for the Incidence of Renal Abnormalities among School Students in Rural Sri Lanka. Proceedings of the 13th International Research Conference of KDU 2020.Colombo.

Creig,E., DV Ekanayake, R.Babich, N. Jayasundara, PMCS De Silva (2020). Zebrafish behavior assay as a cost effective approach to assess the biological effects of exposure to complex chemical mixtures in the Drinking water. Proceedings of the 41st SETAC North America Annual meeting. SETAC NA. Page 85.

Hearth, CA., Jayasumana, CS., De Silva, PMCS., Vervaet, BA., De Broe, MD (2020). Heat stress as a main cause of CKD in agricultural communities: Seven arguments against hypothesis. J. Am. Soc. Nephrol (30). Page 1176

Jayasumana, CS., De Silva, PMCS., Hearth, CA., Vervaet, BA., De Broe, MD (2020). New findings support toxicological origin of Chronic Interstitial Nephritis in Agricultural Communities. J. Am. Soc. Nephrol (30). Page 1177

R. Babich, J. Ulrich, D.V. Ekanayake, A. Massarsky, M. De Silva, P. Manage, B.P. Jackson, L. Ferguson, R.T. Di Giulio,. Drummond, MDIBL; N. Jayasundara (2020). Developmental nephrotoxicity of low-level chemical mixtures: implications for chronic kidney disease of unknown etiology. Book of Abstracts, 30th Annual nmeeting of SETAC Europe 2020, Dublin, Ireland.

M. Daam, S. Chelinho, J.C., Niemeyer, O.J. Owojori, Obafemi Awolowo , P.C. De Silva, J. Sousa, C. van Gestel, J. Rï¿½mbke (2020). Environmental risk assessment of pesticides in tropical terrestrial ecosystems: Test procedures, current status and future perspectives. Book of Abstracts, 30th Annual nmeeting of SETAC Europe 2020, Dublin, Ireland.

Nishara K.G.D, Abeysiriwardhana P.A, Sandamini P.M.M.A, Hasinthara G.A.S, De Silva P.M.C.S (2019) Expression of urinary Beta-2-microglobulin (?2M) in selected fishing and farming communities: A CKDu perspective. Proceedings of the Annual symposium, Faculty of Allied Health Sciences,Galle, Sri Lanka.

Ekanayake, E.M.D.V., Thakshila, W.A.K.G., Jayasinghe, S.S., Chandana, E.P.S., Jayasumana,C., De Silva, P.M.C.S (2019). Factors associated with reduced eGFR in fishing and farming communities in Sri Lanka. Proceedings of 31st Annual Scientific Conference of the International Society of Environmental Epidemiology (ISEE). Utrecht, the Netherlands. 25/28 August 2019.

Wanniarachchi G, Ekanayaka D, Ediriweera S, Asanthi H, Jayasinghe S, Abdul K, Chaminda G, Jayasumana C, Siribaddana S, De Silva P. Emerging Chronic Kidney Disease of uncertain aetiology (CKDu) among rural farming communities in Southern and Uva Provinces of Sri Lanka. Proceedings of 31st Annual Scientific Conference of the International Society of Environmental Epidemiology (ISEE). Utrecht, the Netherlands. 25/28 August 2019.

Wijewickrama, E., Thakshila, W.A.K.G., Ekanayake, E.M.D.V., Ruwanpathirana, T., Jayasinghe, S., De Silva, M (2019). Prevalence of chronic kidney disease and its association with exposure to heavy metals and other environmental toxins in a rural population in Sri Lanka. Kidney International reports (2019) 4, S1-S437.

Gonzalez C., De Silva M., Ekanayake D., Wanniarachchi G., Jayasinghe S., Chandana E., Jayasumana C., Siribaddana S., Srayoshi N., Sabbisetti V., Bonventre J (2018). KIM-1 as an Early Biomarker of Kidney Injury in Agricultural Communities in Sri Lanka. Meeting of the The National Institute of Diabetes and Digestive and kidney diseases heath information center, NIH, Washinton, DC.

Ekanayake, E.M.D.V., Thakshila, W.A.K.G., Jayasumana,C., Jayasinghe, S.S., Chandana, E.P.S., Siribaddana, S.H., De Silva, P.M.C.S (2018). Prevalence of Chroinc Kidney Disease of uncertain etiology (CKDu) among different farming communities in the dry zone, Sri Lanka. SETAC Asia-Pacific Conference, Daegu, South Korea, September 16 to 19, 2018.

Ekanayake, E.M.D.V., Thakshila, W.A.K.G., Jayasimghe, S.S., Chandana, E.P.S., Jayasumana, C., Siribaddana., S.H., De Silva, P.M.C.S. (2018). Declining renal functions among fishing and sugarcane farming communities: Implications on Chronic Kidney Disease of unknown etiology (CKDu) in Sri Lanka. KDU international research conference on 13th -14th September 2018.

Thakshila, W.A.K.G., Ekanayake, E.M.D.V., KS Mohammed Abdul, Samanmali, M. A. G. D., Jayasimghe, S.S., Jayasumana, C., Chandana, E.P.S., Siribaddana., S.H., De Silva, P.M.C.S. (2018). Pesticide use, handling and awareness among rural farmers in Sri Lanka: Implications on emerging Chronic Interstitial Nephritis in Agricultural Communities (CINAC). KDU international research conference on 13th -14th September 2018.

EMDV Ekanayake, KS Mohammed Abdul, WAKG Thakshila, SS Jayasinghe, EPS Chandana, C Jayasumana, SH Siribaddana, PMCS De Silva. (2017) Urinary biomarkers KIM-1 and NGAL may predict Chronic Kidney Disease of uncertain etiology (CKDu) among Sugarcane farmers in Sri Lanka. Proceedings of the International Research Conference, General Sir John Kotelawala Defense University Sri Lanka. Page 28

EMDV Ekanayake, WAKG Thakshila, TSK Dharmasiri, MAGD Samanmali, SS Jayasinghe, EPS Chandana, C Jayasumana, SH Siribaddana, PMCS De Silva (2017). Emerging Chronic Kidney Disease of unknown etiology in Paddy and Sugarcane farmers in two adjacent provinces, Sri Lanka. International Conference on Sustainable Agriculture, Food, and Energy, Malaysia.2017, Page 92

WAKG Thakshila, EMDV Ekanayake, BMM Rajapaksha, H.B Asanthi, SS Jayasinghe, EPS Chandana, C Jayasumana, AG Bandaranayake, PMCS De Silva (2017). Fluoride in drinking water may not induce CKDu among rural paddy farmers in Sri Lanka. International Conference on Sustainable Agriculture, Food, and Energy (SAFE 2017), Malaysia. Page 91

Dilini V. Eakanayake , Khaja S. Mohammed Abdul, Wanniarachchi A.K.G.Thakshila, M. A. G. D. Samanmali, Sameera C. Gunasekara, W. P. N. S. Chandrapathma, H. B. Asanthi , Channa Jayasumana, Sudheera S. Jayasinghe, Ediriweera P. S. Chandana, Sisira H. Siribaddana, Mangala C. S. De Silva (2017). Occupational herbicide exposure may induce Kidney injury molecule I (KIM I) and Neutrophil Gelatinase-Associated Lipocalin (NGAL) levels in sugarcane farmers in rural Sri Lanka. Proceedings of 29th Annual Annual Scientific Conference of the International Society of Environmental Epidemiology, Sydney, Australia.Page 274

Samanmali, M.A.G.D., Leelamanie, D.A.L., De Silva, P.M.C.S (2017). Lethal and sub-lethal toxicity of Herbicide Ricestarï¿½ (Fenoxaprop-p-ethyl 69 g/l + Ethoxysulfuron 20 g/l) on the epigeic earthworm Eisenia andrei in Natural and OECD Artificial soil. Proceedings of the 22nd International Forestry and Environment Symposium. Sri Lanka. Page 121.

Dilini V. Eakanayake , Khaja S. Mohammed Abdul, Wanniarachchi A.K.G.Thakshila, M. A. G. D. Samanmali, Sameera C. Gunasekara, W. P. N. S. Chandrapathma, H. B. Asanthi , Channa Jayasumana, Sudheera S. Jayasinghe, Ediriweera P. S. Chandana, Sisira H. Siribaddana, Mangala C. S. De Silva (2017). Occupational herbicide exposure may induce Kidney injury molecule I (KIM I) and Neutrophil Gelatinase-Associated Lipocalin (NGAL) levels in sugarcane farmers in rural Sri Lanka.Proceedings of 29th Annual Annual Scientific Conference of the International Society of Environmental Epidemiology, Sydney, Australia. Page 274

Samanmali, M.A.G.D., Leelamanie, D.A.L., De Silva, P.M.C.S (2017) Acute and Chronic toxicity of Tiller gold on the earthworm Eisenia Andrei in three areas in Sri Lanka. Proceedings of the 37th Annual Sessions of the Institute of Biology, IOB, Sri Lanka. Page 31

P. Mangala C.S De Silva., K.S. Mohammed Abdul., Channa Jayasumana., Sudeera S. Jayasinghe., Sisira Siribaddana., Saman Chandana., H.B. Asanthi (2016) Elevated Urinary biomarkers KIM-1 and NGAL may predict occurrence of Chronic Interstitial Nephritis (CINAC) in rural Sri Lanka. Conference abstracts of International Society of Environmental Epidemiology in Environmental Health Perspectives. P3-215

Khaja Shameem Mohammed Abdul, D. V. Eakanayake, P.G.M Kalpani, M.A.G.D Samanmali, W.P.N.s Chandrapathma, H.A.S.D Perera, C.Jayasumana, S.S Jayasinghe, E.P.S Chandana, H.B Asanthi, S.H Siribaddana, P.M.C.S De Silva (2016) Occupational paraquat may induce NGAL levels in Sugarcane farmers in Sri Lanka. Proceedings of the SETAC Asia Pacific Conference, Singapore. Page 231.

Samanmali MAGD., P.K.C Hansani & P.M.C.S De Silva (2016) Toxicity assessment of some selected herbicides on Eisenia andrei in different soil types: A tropical approach. Proceedings of the Society of environmental Toxicology and Chemistry (SETAC) Asia Pacific 2016, Singapore. Page 163

Jayathilake, T.A.H.D.G., De Silva P.M.C.S., Peiris, L.D.C. (2016) Assesment of genotoxicity of two cadmium salts in Eisenia andrei using the comet assay. Proceedings of the 3rd International conference on multidisciplinary approaches 2016. Faculty of Graduate Studies, University of Sri Jayewardenepura. Page 110.

T. A. H. D. G. Jayathilake., Mallawaarachchi G.D S., L.D.C. Peiris., P.M.C.S De Silva (2016). Acute and Chronic Toxicity of selected cadmium salts on earthworm Eisenia andrei under tropical conditions. Proceedings of the 21st International forestry and environment symposium, Heritance, Kandalama. Page 20.

H.A.S.D. Perera, K.S. Mohammed Abdul, H.B. Asanthi, P.M.C.S. De Silva and E.P.S. Chandana. (2016). Exposure assessment and ground water quality in Padalangala division, Sri Lanka. Symposium Proceedings, Fourth International Symposium on water quality and Human Health: Challenges Ahead. PGIS, Peradeniya, Sri Lanka. Page 5.

Khaja Shameem Mohammed Abdul, H.A.S.D. Perera, H.B. Asanthi P.G.M. Kalpani, M.A.G.D. Samanmali, W.P.N.S. Chandrapathma and P.M.C.S. De Silva (2015). Water Quality Analysis In CKDu Emerging Locations (Warunagama And Rahathangama) In Monaragala District, Uva Province, Sri Lanka. Symposium Proceedings, Fourth International Symposium on water quality and Human Health: Chalenges Ahead. PGIS, Peradeniya, SrI Lanka. Page 53

K. S. Mohammed Abdul, D. V. Eakanayake, T. D. K. S. C. Gunasekara, H. A. S. D. Perera, B. C. J. De Silva, C. Jayasumana, E. P. S. Chandana, S. S. Jayasinghe and P. M. C. S. De Silva (2015) Occupational Paraquat exposure among sugarcane (Pelwatte) and vegetable farmers (Nuwaraliya) in Sri lanka. Procedeeings of the 35th Annual Sessions, Institute of Biology, Sri Lanka. Page 41

E.M.D.V. Eakanayake, W.A.K.G. Thakshila, K.M. Nishshanka, K.A.A.S. Senevirathne, H.A.S.D. Perera, T.D.K.S.C. Gunasekara, H.B. Asanthi C. Jayasumana, E.P.S. Chandana, K.S. Mohammed Abdul, P. M .C. S. De Silva (2015). Occupational exposure levels of Glyphosate among vegetable farmers in Nuwara Eliya, Sri Lanka: A Enzyme -linked Immunosorbent Assay. Proceedings of the 20th International Forestry and Environment Symposium. Negombo, Sri Lanka. Page 76

K.S. Mohammed Abdul, C. Jayasumana, S.H.Siribaddana, S.S. Jayasinghe, H.B. Asanthi, G.G.T. Chaminda, E.P.S. Chandana, P. Mangala C.S. De Silva (2015) Urinary biomarkers KIM-1 and NGAL for early prediction of Chronic Interstitial Nephritis in Agricultural Communities in Sri Lanka. Proceedings of the 2nd Mesoamerican Nephropathy of unknown origin, San Josï¿½, Costa Rica.

D. Dissanayake and P.M.C.S De Siva (2015) Effects of different vermicomposts on earthworms inhabiting in contaminated soils: An approach for bioremediation. Proceedings of the International Symposium on Environmental Management and Planning 2015, Waters Edge, Battaramulla, Sri Lanka. Page 17

N. D. K.Saumyakumari and De Silva, P.M.C.S (2014) Effects of contaminated soils on survival, growth and reproduction of Eisenia andrei. Symposium Proceedings, Proceedings of the Annual Academic sessions 2014, The Open University of Sri Lanka. Page 13.

P. K.C Hansani and De Silva, P.M.C.S (2014) Ecotoxicological assessment of some selected weedicide formulations on Eisenia andrei under tropical conditions. Symposium Proceedings, Proceedings of the Annual Academic sessions 2014, The Open University of Sri Lanka. Page 91.

Samanmali, M. A. G. D., De Silva, P. M. C. S (2014). Acute and chronic toxicity of biflex ï¿½tc on earthworm Eisenia andrei. Symposium Proceedings, Proceedings of the Wayamba University International Conference WinC2014. Kuliyapitiya, Sri Lanka. Page 275.

Perera, H.S.A.D., Asanthi, H.B., De Silva, P.M.C.S (2014) Assessment of exposure levels of drinking water contaminants in groundwater sources in Hambanthota district, Sri Lanka. Symposium Proceedings, Third International Symposium on Water quality and Human Health: Challenges Ahead, PGIS, Peradeniya, Sri Lanka. Page 23.

Owojori, O.J., De Silva, P.M.C.S., Daam, M.A., Roembke, J., Sousa, J.P., Waichman, A.V., van Gestel, C.A.M (2013) Review on the status and challenges of soil ecotoxicology in the tropics. Proceedings of the 23rd Annual SETAC Meeting, Glassgow. Page 146.

De Silva, P.M.C.S (2013). Integrated assessment of pesticide effects on physiological, population and functional responses of earthworm communities in Sri Lanka. Proceedings of the second international conference on Environmental Pollution, Restoration and Management, Hanoi, Vietnam.

De Silva, P.M.C.S (2011). Global warming may affect the toxicity of pesticides on beneficial soil organisms: An investigation of three selected pesticides on earthworms under two temperature regimes. Proceedings APN Scientific Planning Group Meetings, Colombo, Sri Lanka

De Silva, P.M.C.S (2010). Effects of modified artificial soils on compost worms: An approach to large scale worm production. Proceedings on the fifteenth International Forestry and Environmental Symposium, University of Sri Jayewardenapura, Nugegoda, Sri Lanka.

De Silva, P.M.C.S., Pathiratne, A., van Starlan, N.A.M., van Gestel, C.A.M., (2010).

Chlorpyrifos causes decreased organic matter decomposition by suppressing earthworm and termite communities in tropical soil. Proceedings of the 20th Annual meeting of SETAC Europe, Seville, Spain.

De Silva, P.M.C.S., N.J.De.S. Amarasinghe , C.A.M. van Gestel (2010). Toxicity of some selected herbicide formulations to the common compost worm, Eisenia andrei under tropical conditions. Proceedings of the first International Conference on Environment Pollution, Restoration and Management, Ho Chi Minh City, Vietnam.

De Silva, P.M.C.S., Van Gestel, C.A.M. (2009) Comparing the sensitivity of Perionyx excavatus and Eisenia andrei in earthworm avoidance tests using two soil types in the tropics. Proceedings of the 19th annual meeting of SETAC Europe, Gï¿½teborg, Sweden.

Guruge W.A.H.P., Herath P.L., De Silva P.M.C.S (2009). A Preliminary study on the effects of vermicompost on the growth of Red Tilapia and physio-chemical parameters in experimental tanks. Proceedings of the first national symposium on Natural Resources Management NRM 2009. Department of Natural Resources, Sabaragamuwa University of Sri Lanka. Page 46

De Silva, P.M.C.S., Van Gestel, C.A.M. (2008). Development of an alternative artificial soil for earthworm toxicity testing in tropical countries. Proceedings of the 5th SETAC world congress, Sydney, Australia. Page 234.

Suriyaarachchi, M.L., Guruge, W.A.H.P., De Silva, P.M.C.S. (2008). Preliminary Study on the Effect of Two Organic manures on the Physico-Chemical Parameters of Pond Water. Proceedings of the 13th International Forestry Environmental Symposium. Tangerine Hotel, Kalutara, Sri Lanka. Page 17

De Silva, P.M.C.S. & Julka J.M. (2008). Evidence for increasing populations of exotic earthworm fauna in Sri Lanka: Sign of invasion? Proceedings National Symposium on Alien Invasive Species. Colombo. Sri Lanka.

De Silva, P.M.C.S. (2008). Investigation of effects of different soil types on reproductive potential of compost worms: An approach to vermicomposting. Proceedings of the 28th Annual Sessions, Institute of Biology (IOB), Colombo. Sri Lanka.

Senewirathne, S.H.S., De Silva, P.M.C.S., N.J.De.S. Amarasinghe, C.A.M. (Kees) van Gestel (2008). Acute toxicity of some selected weedicide formulations to the common compost worm, Eisenia andrei under tropical conditions. Proceedings of the 28th Annual Sessions, Institute of Biology (IOB), Colombo. Sri Lanka.

De Silva, P.M.C.S., N.J.De.S. Amarasinghe , C.A.M. (Kees) van Gestel (2008). Toxicity of Mancozeb, the most widely used fungicide to the earthworm (Eisenia andrei) in two different soil types. The Second International Conference of Sabaragamuwa University, Belihuloya, Sri Lanka.

De Silva, P.M.C.S., S.H.S. Senewirathne (2007). Earthworms as bio indicators - Effects of commonly used insecticide (chlorpyrifos) on the avoidance behavior of earthworm (Eisenia andrei) under laboratory conditions. Twelfth International Forestry and Environment Symposium, Kalutara, Sri Lanka.

De Silva, P.M.C.S., S.H.S. Senewirathne, N.J.D.S. Amarasinghe (2007). Acute and chronic toxicity of Carbendazim, a fungicide used in Sri Lanka to earthworm (Eisenia Andrei) under laboratory conditions. Twelfth International Forestry and Environment Symposium, Kalutara, Sri Lanka.

De Silva, P.M.C.S., S.H.S. Senewirathne, C.A.M. Kees van Gestel (2007). Toxicity of Chlorpyrifos ,a frequently used organophosphate insecticide to the earthworm in two different soil types. Proceedings of the 27th annual sessions of the Institute of Biology (IOB), Colombo. Sri Lanka.

De Silva, P.M.C.S., S.H.S. Senewirathne, N.J.D.S. Amarasinghe (2007). Investigation of potential culturing substrates for earthworms Eisenia Andrei and Perionyx excavatus for ecotoxicological tests under laboratory conditions. Proceedings of the 27th annual sessions of the Institute of Biology (IOB), Colombo. Sri Lanka. Institute of Biology (IOB), Colombo. Sri Lanka

De Silva, P.M.C.S., N.J.De.S. Amarasinghe, W.A.H.P. Guruge, C.H Priyantha (2006). Threats to the native freshwater fish fauna in the Nilwala river basin in southern Sri Lanka and possible conservation strategies. International conference on humid tropical ecosystems. Kandy, Sri Lanka.

Guruge, W.A.H.P., Amarasinghe, N.J.De.S., De Silva, P.M.C.S., C.H. Priyantha (2003). Water quality monitoring using biological indicators in streams of the Nilwala river basin, Sri Lanka. Proceedings of the International Conference on water resources management for safe drinking water. Chiang Mai, Thailand.

De Silva, P.M.C.S., Amarasinghe, N.J.D.S, Guruge, W.A.H.P (2003). Effects of water quality and substrate on freshwater fish distribution in Nilwala river basin in Southern Sri Lanka. Proceedings of the Large River Symposium, Phnom Penh, Cambodia.

De Silva, P.M.C.S., Samayawardehena, L.A (2002). Effects of Chlorpyrifos (Lorsban) on reproductive performances of guppy (Poecilia reticulata). Proceedings of the International Congress on the Biology of Fish. University of British Columbia, Vancouver, Canada.

De Silva, P.M.C.S. (2002). Threats to the endemic freshwater fish species in Sri Lanka and possible conservation strategies. Proceedings of the Third student conference in conservation science, University of Cambridge, Cambridge, UK.

De Silva, P.M.C.S. & Samayawardehena, L.A (2001). Establishment of Guppy as a model toxicokinetic system using parental to offspring effects of LORSBAN (chlorpyrifos). Proceedings of the 57th annual sessions, Sri Lanka Association for the Advancement of Science (SLASS), Sri Lanka.

Chandana, E.P.S, Dewasurendra, R, Dharmadasa, L, De Silva, P.M.C.S, Ravindra, R, Lasanthi, P, Amarasinghe, N.J.D.S, Samayawardehena, L.A. (2001). Analysis of Socio-ecological factors affecting Bundala National Park, Proceedings of the 57th annual sessions, Sri Lanka Association for the Advancement of Science (SLASS), Sri Lanka.

De Silva, P.M.C.S., Amarasinghe, N.J.D.S, Gurugae, W.A.H.P. (2001). Influence of water quality and substrate characteristics on the distribution of fish species in some selected tributaries in Nilwala river basin, Proceedings of the 57th annual sessions, Sri Lanka Association for the Advancement of Science (SLASS), Sri Lanka.

Awards:

Presidential Awards For Research - 2002, 2005, 2009, 2010, 2013, 2014, 2016

NRC Merit Awards - 2015

Vice Chancellors's Awards - The Highest Recipient of Grants 2016

Vice Chancellor's Awards - The Most Outstanding Scholar 2014

Vice Chancellor's Awards - The Most Outstanding Young Scientist 2011

NSF/ SCOPUS Young Scientist Award 2008

Fellowships:

Fulbright Fellowship - 2017/2018

Wotro DC Fellowship - 2009

NORAD Fellowship - 2005

Proctor, University of Ruhuna

Head, Department of Oceanography and Marine Geology

Chairman, Board of Science

Prof. P.Mangala C.S. De Silva

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